Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
  • A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system

Definitions

• the present invention relates to fungicidal mixtures comprising, as active components,
• the invention relates to a method for controlling harmful fungi from the class of the Oomycetes using mixtures of the compound I with the compound II, to the use of the compound I with the compound II for preparing such mixtures and to compositions comprising these mixtures.
• Oomycetes are biologically more closely related to algae than to fungi. Accordingly, what is known about the fungicidal activity of active compounds against “true fungi” such as Ascomycetes, Deuteromycetes and Basidiomycetes can be applied only to a very limited extent to Oomycetes.
• Oomycetes cause economically relevant damage to various crop plants. In many regions, infections by Phytophthora infestans in the cultivation of potatoes and tomatoes are the most significant plant diseases. In viticulture, considerable damage is caused by peronospora of grapevines.
• mixtures of different active compounds are nowadays preferably employed for controlling harmful fungi.
• active compounds having different mechanisms of action it is possible to ensure a successful control over a relatively long period of time.
• the combination according to the invention of the compounds I and II is also suitable for controlling other pathogens such as., for example, Septoria and Puccinia species in cereals and Alternaria and Boytritis species in vegetables, fruit and grapevines.
• the pure active compounds I and II When preparing the mixtures, it is preferred to employ the pure active compounds I and II to which further active compounds against harmful fungi or against other pests, such as insects, arachnids or nematodes, or else herbicidal or growth-regulating active compounds or fertilizers can be added according to need.
• active compounds in the above sense are in particular active compounds selected from the following groups:
• a further fungicide III or two fungicides III and IV are added to the compounds I and II.
• the mixtures of the compound I and the compound II or the simultaneous, that is joint or separate, use of the compound I and the compound II are distinguished by being very highly active against phytopathogenic fungi from the class of the Oomycetes, in particular of Phytophthora infestans on potatoes and tomatoes and Plasmopara viticola on grapevines. They can be used in crop protection as foliar— and soil-acting fungicides.
• the compound I and the compound II can be applied simultaneously, that is jointly or separately, or in succession, the sequence, in the case of separate application, generally not having any effect on the result of the control measures.
• the compound I and the compound II are usually applied in a weight ratio of from 100:1 to 1:100, preferably from 20:1 to 1:20, in particular from 10:1 to 1:10.
• the components III and, if appropriate, IV are added, if desired to the compound I in a ratio of from 20:1 to 1:20.
• the application rates of the mixtures according to the invention are from 5 g/ha to 1000 g/ha, preferably from 50 to 900 g/ha, in particular from 50 to 750 g/ha.
• the application rates for the compound I are generally from 1 to 1000 g/ha, preferably from 10 to 900 g/ha, in particular from 20 to 750 g/ha.
• the application rates for the compound II are generally from 1 to 1000 g/ha, preferably from 10 to 500 g/ha, in particular from 40 to 100 g/ha.
• application rates of mixture are generally from 1 to 1000 g/100 kg of seed, preferably from 1 to 200 g/100 kg, in particular from 5 to 100 g/100 kg.
• the method for controlling harmful fungi is carried out by the separate or joint application of the compound I and the compound II or of the mixtures of the compound I and the compound II by spraying or dusting the seeds, the plants or the soils before or after sowing of the plants or before or after emergence of the plants.
• the compounds are preferably applied by spraying the leaves.
• the mixtures according to the invention, or the compounds I and II, can be converted into the customary formulations, for example solutions, emulsions, suspensions, dusts, powders, pastes and granules.
• the use form depends on the particular intended purpose; in each case, it should ensure a fine and even distribution of the compound according to the invention.
• the formulations are prepared in a known manner, for example by extending the active compound with solvents and/or carriers, if desired using emulsifiers and dispersants.
• Solvents/auxiliaries suitable for this purpose are essentially:
• Suitable surfactants used are alkali metal, alkaline earth metal and ammonium salts of lignosulfonic acid, naphthalenesulfonic acid, phenolsulfonic acid, dibutyinaphthalenesulfonic acid, alkylarylsulfonates, alkyl sulfates, alkylsulfonates, fatty alcohol sulfates, fatty acids and sulfated fatty alcohol glycol ethers, furthermore condensates of sulfonated naphthalene and naphthalene derivatives with formaldehyde, condensates of naphthalene or of naphthalenesulfonic acid with phenol and formaldehyde, polyoxyethylene octylphenyl ether, ethoxylated isooctylphenol, octylphenol, nonylphenol, alkylphenyl polyglycol ethers, tributylpheny
• Substances which are suitable for the preparation of directly sprayable solutions, emulsions, pastes or oil dispersions are mineral oil fractions of medium to high boiling point, such as kerosene or diesel oil, furthermore coal tar oils and oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons, for example toluene, xylene, paraffin, tetrahydronaphthalene, alkylated naphthalenes or their derivatives, methanol, ethanol, propanol, butanol, cyclohexanol, cyclohexanone, isophorone, highly polar solvents, for example dimethyl sulfoxide, N-methylpyrrolidone or water.
• mineral oil fractions of medium to high boiling point such as kerosene or diesel oil, furthermore coal tar oils and oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons, for example toluene, xylene, paraffin
• Granules for example coated granules, impregnated granules and homogeneous granules, can be prepared by binding the active compounds to solid carriers.
• solid carriers are mineral earths such as silica gels, silicates, talc, kaolin, attaclay, limestone, lime, chalk, bole, loess, clay, dolomite, diatomaceous earth, calcium sulfate, magnesium sulfate, magnesium oxide, ground synthetic materials, fertilizers, such as, for example, ammonium sulfate, ammonium phosphate, ammonium nitrate, ureas, and products of vegetable origin, such as cereal meal, tree bark meal, wood meal and nutshell meal, cellulose powders and other solid carriers.
• mineral earths such as silica gels, silicates, talc, kaolin, attaclay, limestone, lime, chalk, bole, loess, clay, dolomite, diatomaceous earth
• 10 parts by weight of the active compounds are dissolved in water or in a water-soluble solvent.
• wetters or other auxiliaries are added.
• the active compound dissolves upon dilution with water.
• the active compounds 50 parts by weight of the active compounds are ground finely with addition of. dispersants and wetters and made as water-dispersible or water-soluble granules by means of technical appliances (for example extrusion, spray tower, fluidized bed). Dilution with water gives a stable dispersion or solution of the active compound.
• 75 parts by weight of the active compounds are ground in a rotor-stator mill with addition of dispersants, wetters and silica gel. Dilution with water gives a stable dispersion or solution of the active compound.
• 0.5 part by weight of the active compounds is ground finely and associated with 95.5% carriers.
• Current methods are extrusion, spray-drying or the fluidized bed. This gives granules to be applied undiluted.
• Aqueous use forms can be prepared from emulsion concentrates, pastes or wettable powders (sprayable powders, oil dispersions) by adding water.
• emulsions, pastes or oil dispersions the substances, as such or dissolved in an oil or solvent, can be homogenized in water by means of a wetter, tackifier, dispersant or emulsifier.
• concentrates composed of active substance, wetter, tackifier, dispersant or emulsifier and, if appropriate, solvent or oil and such concentrates are suitable for dilution with water.
• the active compound concentrations in the ready-to-use preparations can be varied within relatively wide ranges. In general, they are from 0.0001 to 10%, preferably from 0.01 to 1%.
• the active compounds may also be used successfully in the ultra-low-volume process (ULV), it being possible to apply formulations comprising over 95% by weight of active compound, or even to apply the active compound without additives.
• UUV ultra-low-volume process
• the active compounds separately or jointly, were prepared as a stock solution comprising 0.25% by weight of active compound in acetone or DMSO. 1 % by weight of the emulsifier Uniperol® EL (wetting agent having emulsifying and dispersant action based on ethoxylated alkylphenols) was added to this solution, and the mixture was diluted with water to the desired concentration.
• Uniperol® EL wetting agent having emulsifying and dispersant action based on ethoxylated alkylphenols
• Leaves of potted vines of the cultivar “Riesling” were sprayed to runoff point with an aqueous suspension having the concentration of active compound stated below.
• the next day, the undersides of the leaves were inoculated with an aqueous zoospore suspension of Plasmopara viticola .
• the grapevines were then initially placed in a water-vapor-saturated chamber at 24° C. for 48 hours and then in a greenhouse at 20-30° C. for 5 days. After this period of time, the plants were again placed in a humid chamber for 16 hours to promote sporangiophore eruption. The extent of the development of the disease on the undersides of the leaves was then determined visually.
• An efficacy of 0 means that the infection level of the treated plants corresponds to that of the untreated control plants; an efficacy of 100 means that the treated plants were not infected.

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• Life Sciences & Earth Sciences (AREA)
• Agronomy & Crop Science (AREA)
• Pest Control & Pesticides (AREA)
• Plant Pathology (AREA)
• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Dentistry (AREA)
• General Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

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• 2004
  • 2004-11-18 BR BRPI0416954-9A patent/BRPI0416954A/pt not_active IP Right Cessation
  • 2004-11-18 EA EA200600904A patent/EA200600904A1/ru unknown
  • 2004-11-18 UA UAA200607130A patent/UA80231C2/uk unknown
  • 2004-11-18 US US10/579,140 patent/US20070249635A1/en not_active Abandoned
  • 2004-11-18 CN CNA2004800350211A patent/CN1886047A/zh active Pending
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